4 Operation
4.6 Help leaflets
DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com 123
Table 18: Control connections with default settings (help card)
Table 19: Default settings for basic parameters (help card)
Control 
terminal 
Signal Description
1 +24 V  Control Voltage Output voltage
2
DI1 Digital Input 1 FWD = clockwise rotating field enable
(U
 
 
V 
 
W)
3
DI2 Digital input 2 REV = anticlockwise rotating field enable
(W
 
 
V 
 
U)
4
DI3 Digital Input 3 FF1 = Switch from analog setpoint AI1 (control 
signal terminal 6) to fixed frequency value f-Fix1 
in parameter P-20 (15 Hz)
5
+10V Reference voltage Output voltage
6
AI1 Analog Input 1 Reference voltage: 0 - 10 V = 0 - 50 Hz 
(Rotating field frequency)
7
0V Reference potential for +24 V and + 10 V, 0 V = Control terminal 9
8
AO Analog output  Frequency actual value: 0 - 50 Hz = 0 - 10 V 
(output voltage)
9
0V Reference potential for +24 V and + 10 V, 0 V = Control terminal 7
10
relay Contact N/O RUN = Run signal (operating signal); closed when 
there is an enable signal at DI1 or DI2. 
11
→
When the active enable signal (FWD or REV) is switched off, 
the motor will coast to a stop with the default settings.
Parameter
Designation Description
P-01 f-
max
f-max  Hz Maximum output frequency; can be set to any value 
between f-min (P-02) and the motor’s rated 
frequency (P-09); maximum setting: 5 x P-09
P-02
f-
min
Min Frequency Hz Minimum output frequency, can be set to any value 
between 0 and f-max (P-01)
P-03
acc t-acc s Acceleration time from stop to rated frequency 
(P-09).
P-07
U
Motor
Motor Nom 
Volt
 V Defined rated motor voltage at rated frequency 
(P-09) = Mains voltage (U
LN
)
P-08
I
Motor
Motor Nom 
Current
A Rated operational current for the DC1 variable 
frequency drive. The motor protection function can 
be adjusted to match the motor being used by 
setting this parameter to the rated motor current 
(see example below).
P-09
f
Motor
Motor Nom 
Freq
f Rated motor frequency (50 Hz) at the rated motor 
voltage (P-07)
P-11
V-
Boost
Zero Frequency 
Volt
% Voltage is used to increase the applied motor 
voltage at low output frequency, in order to improve 
low speed and starting torque.